User interface for a portion of a display screen



FIG. 1 is a front view of a first image of a transitional user interfacefor a portion of a display screen showing the new design.

FIG. 2 is a front view of a second image thereof.

FIG. 3 is a front view of a third image thereof; and,

FIG. 4 is a front view of a fourth image thereof.

The appearance of the design transitions between the images shown inFIG. 1–4. The process or period in which the design transitions amongthe Figures forms no part of the claimed design. The broken lines shownin the drawings are included for the purpose of illustrating portions ofthe user interface that form no part of the claimed design. The brokenline showing of the display screen forms no part of the claimed design.

The ornamental design for a transitional user interface for a portion ofa display screen, as shown and described.